Boiler cleaner



June 24, 1930. N. L. SNOW 1,767,408

BOILER CLEANER Original Filed Nov. 6, 1923 3 Sheets-Sheet l um tot .Vharm an/ 8m,

. i W N QlE-iiinufinl 4 I 4 M E W m." X A June 24,- .1930.

' N. L. SNOW BOILER CLEANER Original Fired New}. 26, 1925 3 Sheets-Shed; 2

lllllllliWf/Z/ June 24; 193.0,

N. sNow BOILER CLEANER 7 Original Filed Nov. 26, 1925 3 Sheets-Sheet s Patented June 24,1930

hurrah ,noRMAN-L. snow, or NEW 'cAnAAN, CONNECTICUT, ASSIGNOR T DIAMONDPQWEB SPECIALTY oonronerron", or nnrnorr, MICHIGAN, {A QORBORATIQN or MICHIGAN BOILERGLEANERT p f- Application'filed November 26, 1923,;Seria1 The invention relates to boiler, cleaners and refers more particularly to that type having a rotatable blower element adapted to discharge steamer the like upon theboil er tubes. One of the objects of thefinvention is theprovision of. a boiler cleaner unit having a rotatable blower element and avalve controlling the passage of steam or the" like tothe blower element and provided with means for-operating-the blower element and V normally operating the valve and for renderingthe valve inoperative at a predetermined interval during the voperation of the blower such that the valve controlling the: admission-of steam or the like tothe blower ele inent is opened and closed during the rota-- tion of the blower element until the latter has been rotated a predetermined number of times after which the waive-remains closed. Another object is the provision of means for operating the Valve, dependent upon the operation "of-the blower element andincluding means also dependent upon the operation of the blower element forcontrolling the operation of the valve. 'A fun ther objectis the provision of means for "rendermgthe valve inoperative after, a pre blower element andof meanslfor determined, number of operations" of the y then ren deringthevalve-operative. i

tures of construction andcombinations and arrangements of parts asmore fully-here1nafter-set forth! In thedrawin K Figure 1 is a side elevation of a boiler cleaner unit embodying my. invention; v

.Figure 2 is an en'd'view thereof partly broken away; 7 a 1' x p x a Figure 3'isiatopf plan view thereof;

Figures 4, 5and 6 are views corresponding to FiguresL'Q and 3 butshowing a modified construction of boiler cleaner." 7

In Figures 1 and 2, I have illustrated, a

boiler cleaner unit in which lie the blower element adapted to discharge steam or the like against and betweenthe boiler tubes and 2 :is thestationary gooseneck connected by No. 677,166. mama January 28, 192

the usualswivel to theblower element. The

lowerend of the gooseneck has thecasing 3 for the valve twhich controls-the admis sion of steam or the like to ment-through the gooseneck. I Th blowerelement-is rotated blower element bysuitable reduction gear-- ing such ,as the pinionb and gear 7. The valvefis opened by means of the cam 8 beside and concentric with the gear? and ro- .7

tatable therewith, the lever '9 having its upper end engageable'with the cam. and its lower end pivoted at 10-upon the lug 11 extending upwardly frointhe valve casing 3 and-also the disk 12 en'gageable by' 'the lever and sengageable with :the valve stem .13 which extends upwardly-through the top of the valve casing. The disk 12. is ,n1ovable-- axially and. is (held in normal position by means of the 5 coil, spring 14 surroundinglth'e hollow stem 15 upon thei disk which telescopesover the column 1 6 extending-up- Wardly from the valveicasing. I With the arrangementas thus far adescribed, as thefblo'wer element 1 is'rotated,

the "lever 9 is swung about its pivot 10, thereby depressing the disk 12, which, in turn -moves' thevalve stem'13 longitudinally I downward and thereby moves the valve 4 Qto opehpositionQ As the operating portion of the cam; becomes; disengaged from the lever, the disk12 is moved axiallyiupward by theflcoil spring land the valve stem 13 mismoved axially upward by means of the vcoil spring '17 surrounding this valve stem and (abutting the packinggland 18 and the colla'rjll), whichilatter is-securedjto the upper endof the valve stem. f Thus, for each rotation' of jthe blower element, the valve is opened and closed;

Toautomatically limit the operation of the valve after a predetermined number of 'rotationsjofthe blower elementhave 0c curred, I'hav'e-formed the disk12 with the Vconcentric'slot20 located towregister'with the valveisstem 13 andof a width to receive "thisi'valvel scenik The thickness of the disk is such that when depressedwith its "slot registering with the valve stem, the lever engaging the disk fails to cause it to come jacent teeth. Thus it is seen that with this construction, the valve l'is adapted to be opened as long as the slot of the disk 12 does not register with the valve stem. However, upon continued rotation 6f the blower element, the disk is rotated until its slot registers with the valve stem, at which time the valve remains closed. In the present instance, the slot 20 is of a length such that three revolutions of the blower element are necessarybefore the slot passes beyond the valve stem and before the valve can be opened.

In the modified construction of boiler cleaner unit shown in Figures l, 5 and 6, the blower element 23 is connected to the gooseneck 24 by the usual swivel connection. -The gooseneck has at its lower end the valve casing 25 in which the valve 26 is located. 27 is the main valvebelow the valve 26 for controlling the admission of steam or the like to the gooseneck. This blower element is adapted to be actuated in the same manner as the blower element shown in Figures 1, 2 and 3 as by means or" a chain passing over the sheave 28 which is connected to the blower element by means of the pinion 29 and gear 30. e

The valve 26 has the valve stem 31 extending upwardly through the casing 25 and adapted to be engaged by the disk 32 yieldably supported above the casing 25 in the same manner as the disk 12 in Figures 1, 2 and '3. This disk'32 is adapted to be axially depressed by means of the pivotal lever 33, the upperend of which is 'engageable with the cam 3a-beside and concentric with the gear and rotatable therewith. a I

In the present instance, the disk 32 which is adapted to render the valve '26 inoperative, depends upon the V admission of steam or the like for subsequently rendering the valve operative. In detail, the disk 32 has the concentric slot 33 so located that it will register with the valve stem-31 and pf such a width that the valve stem will "freely engage therein. Theteeth 34 upon theperiphery of thedisk 32 are interrupted, one tooth being lacking in the present instance, and this interruption is so located relative to the slot 33 that whenthe latter is in registration with the valve stem the driving pin 35 upon the gear 30 passes through this interruption without engaging any tooth so that the disk 32 is no longer rotated. To rotate this disk in order to again operate the valve upon rotation of the blower element, I have provided at one side of the disk and extending transversely of the gear 30, the plunger 36, one end of which slidably engages in the cylinder 37 and the other end of which slidably engages inthe bracket 38 secured upon the gooseneck 24. This plunger :is provided with the dog 39 pivoted thereon and having its upper end or nose engageable with a tooth 3d uponthedisk. The dog'is held from rotation in a counter-clockwise direction by means of the transverse pin 40 upon the plunger, but is free to rotate in a clockwise direction to pass the teeth upon the disk when the plunger is being forced to its normal or starting position by the coil spring l1, which surrounds the outer end of the plunger and abuts the bracket 38 and the collar 42 upon the plunger. However, this plunger is not moved to its original or starting position until the main valve 27 is closed and the pressure of the steam or the like above the main valve andin the cylinder is reduced to approximately atmospheric pressure.- With the plunger in its normal or starting position and upon opening the -main valve, the steainor the like passes through the pipe 43 leading from the'valve casing 25 to the cylinder--37, thereby forcing the plunger outwardly and causing the dog 39 to engage'a tooth 34c upon the disk 32 to thereby rotate the disk an angular distance equal to that between corresponding sides of adjacent teeth, which brings the first tooth at the side of the interruption into a position Where it will be v engaged by the driving pin 35 upon-operation of the blowerelement. The operation of the blower element and, opening and closing of the valve may'now be begun and the control disk will be rotated with a step-bystep movement until its slot again registers with the valve stem, at which time, the valve will remain closed, regardless of whether rotation of the blower element is continued or "stopped. However, upon closing and then opening of themain valve, the control disk is again brought into operative position as above described when the same series of operations may be again carried out.

What I claim as my invention is:

1. Ina boiler cleaner unit the combination with a blower element movable through a succession of cycles and a valve for controlling theadmission of steam or the like to said blower element, of means mounted on the unit for moving said blower element consecutively through said cycles, andmeans inllO eluding mechanical connections between-the blower. element operating and, the

valve dependent upon the moving of said blower element for opening and closing'said U valve in each of a predetermined number like to said blower element, of; means for opening and closing s'aid valve comprising apivotal lever adapted to be actuatcd upon rotation of said blower element, and a control memberbetween said lever and valve having,- an opening registrable with said valve stem. j

3. In aboiler cleaner, the combination with a rotatable blower element, means for rotating said blower element and a valve for. controlling the admission of steam or the like to said blower element and having a valve stem, of means for controlling the opening and closing of said valve upon rotation of said blower element including a rotat able 'port1on engageable with said valve stem and axially movablemember having a and also an apertured portion adapted to I re ister with said valve stem.

a. In a boiler cleaner, the combination with a rotatable blower element, means for rotating said blower element, a valve for controlling the admission of steam or the like to said blower element and having a valve stem, a cam rotatable with said'blower element, andapivotal lever "engageable' with said cam, ota member for controlling the actuation of said valve, rotatableupon rotation ofsaid blower elementand having a portion engageable with said pivotal lever whereby said rotatable member is moved axially and a portion engagea'ble with sald valve stem whereb 1 upon movement of said member said valve is actuated, said rotatable member also having an openin registerable with said valve stem whereby said member may be moved axially without actuating said valve.

5. In a boiler cleaner, the combination;

with a rotatable blow er element, means for rotatin said blower element includin a b c 1 gear, a valve for controlling the fiClllllSSlOll oi steam or the like to said blower element, said valve havinga stem,'a cam rotatable with said blower element, and a lever engageable with said cam, of a rotatable" member for controlling theactuation of said valve located between said lever and valve stem 7 and having a portion engageable with valve stem for actuating the same and an apertured portion reglstrable with said valve tion with stem, said control member being movable axially toward said valve by said lever and being provided with a plurality of shoulders, and a driving projection upon said gear en- 'gagea'ble successively with said shoulders to rotate said control member. p 6. In aboiler cleaner unit, the combination with a rotatable blower element adapted to discharge ajet of cleaning fluid, a station? ary cleaning fluid supply pipe, a valve therein controlling the supply of said fluid to'the blower element, and means mounted Y onfsaid unit to rotatesaid blower element, of'ine'ans'operated by thefirst means to operate said valve whereby, upon. continued movement "of the blower element rotating means, the blower element and valve are moved throughv successive cycles, and means normally included in the said'valve operatingmeans, and automatically acting-for pre- A venting the valve operating means lfrom.

element may be moved through one or more additional cycles without effecting an actui ation of said valve. v 1 i j -7. In a boiler cleaner unit, the combination with a rotatable blower element adapted "to discharge a jet of cleaning fluid, a

stationary cleaning fiuid' supply pipe, a,

valve therein controlling the supply of said fluid to the blower element and -means mounted on 'sald unt to" rotate said blower element, of means operatedby the first means to operate said valve -whereby, upon con tinned movement of the blower element rotating means, the blower element andvalve aremoved throughsuccessivev cycles, and

means carried. by, the blower unit and adapted to cooperate withsaid valve operating I means and automatically acting after a'predetermined number of successive .cycles thereoffonpermitting rotation ofthe blower elementthrough av predetermined number of a rotatable functioning after a predetermined number 'o'fsuccessive cycles, whereby said blower ,cycles without actuatingthe valve. V r

In a boilercleaner unit, the combina-- blower 1ele111ent adapted 'to discharge; a jet of-cleaning :fiuid, a stationary cleaning fluidsupply xpipe,1a valve therein controlling the supply of" said fluid tothe blowergelement, and means vmounted on said unit to (rotate said j blower =element,. of means operated by the i' first means to operate said valve whereby, .up'on continued movement of the blower element rotating means, the blower element ,an'd. valve are .moved through successive V cycles, and means carried by the blowerunit, and adapted to co-operate with sand .valvef operating means :and automatically" acting after a predetermined number of successive cycleszthereoit for permitting rotat on of the blower ielement through a. predetermined numberror' cycles withoutactuating' the valve, said last. named means thereafter acting to again establish an operative connection between the blower element rotating means and the valve.

9. In a boiler cleaner unit, the combination with a blower element, means for moving said element through a succession of cycles, a valve for controlling the flow of cleaning fluid to said element, and a mechanical connection between said blower, element and valve normally operable to actuate said valve. in each cycle of movement of said blower element of means operable upon movement of said element through a predetermined number of said cycles for rendering said connection inoperative,'whereby said element may be moved through one of said cycles without effecting an actuation of said valve. p l

10. In a boiler cleaner unit, the combination with a blower element, means for moving said element through a succession of cycles, a valve for controlling the flow of cleaning fluid to said element, and a mechanical connection between said blower element and valve normally operable to actuate said valve in each of said cycles of movement of said blower element, of means operable upon movement of said element through a predetermined number of said cycles "for rendering said connection inoperative, whereby said element may be moved without effecting an actuation of said valve, said means being also operable upon a further predetermined movement of said blower element to render said connection operative to eflect an actuation of said valve from said blower element.

11. In a boiler cleaner unit, the combination with a blower element, means for moving said element, a valve for controlling the flow of cleaning fluid to said element, and a mechanical connection between said blower element and valve for actuating the latter from the former, of means operable upon a predetermined movement ofsaid element for rendering said .connection inoperative, whereby said element may be moved without efiecting an actuation of said valve, said means including a steinfor actuating said valve, a lever actuated upon rotationof the said blower element, a member'interposed .1 between the said lever and the valve stem for transmitting the movement of-the former to the latter, and means for moving the said member to render the same inoperative. 12.. In a boiler cleaner unit, the combination with a rotatable blower elementand a valve for controlling the admission of cleaning fluid to said blower element, of means normally operable to open and close said valve during each cycle of rotation of said blower element, and means operable upon rotation of said blower element through a predetermined number of cycles to render said first mentioned means inoperative whereby said blower element may be rotated through one or more cycles without eflecting an actuation of said valve.

13. In a boiler cleaner unit, the combination with a rotatable blower element, a valve for controlling the admission of cleaning fluid to said blower element, and means for rotating said blower element, of a connection between said blower element rotating means and said valve normally operable to open and close said valve during each cycle of rotation of said blower element, and means operable upon rotation of said. blower element through a predetermined number of cycles to render said connection inoperative whereby said blower element may be rotated through one or more cycles without efi'ecting an actuation of said valve.

In testimony whereof I afiix my signature.

NORMAN L. SNOW. 

